文档介绍：科技论文
题目 Infra-red sensor and its application
系别电子工程系.
专业计算机控制技术.
班级 0602 .
学生姓名.
学号 060397 .
指导教师.
Infra-red sensor and its application
Infra-red sensors make use of objects have the characteristics of infrared radiation, automatically detecting sensors. In physics, we know visible light is not visible light, infrared light and radio are all ic waves, which is the difference between the wavelength (or frequency) is different. Will be different according to the wavelength of ic waves (or frequency) can be formed into row of the ic spectrum. Human eyes can see by the wavelength of visible light from long to short order, followed by red, orange, yellow, green, green, blue and purple. Infra-red visible light waves do not belong to the scope of its wavelength in general between the -600μm (known as infrared). The infrared area usually can be divided into near-infrared ( ~ ), mid-infrared (-l0μm) and far-infrared (10μm above), more than 300μm in the region, also known as "sub-millimeter wave." In recent years, infrared radiation technology has e a fast-growing emerging discipline. It has been widely used in the production, scientific research, military, medical and other fields.
1, infrared radiation and its nature
Infrared radiation is due to objects (solid, liquid and gas) elements within the rotation and vibration generated. Such is the process of vibration caused by the heat of objects, only in the absolute zero (- ℃), the object of all elements of the movement will stop. Therefore, absolute zero, no one will be fired infrared objects. In other words, under normal room temperature, all the objects are fired infrared radiation source. For example, flame, bearings, automobiles, aircraft, animals and plants are all human and even infrared radiation sources. Infra-red and all ic waves, with reflection, refraction, scattering, absorption and interfere with nature, and so on, but it is characterized by a very large effect, a vacuum in t